An area of low pressure developed across the southeastern United States on the night of November 14th, and tracked northeastward along the North and South Carolina coastlines during the daytime hours on the 15th, strengthening to around 995mb on the night of the 15th as it continued moving northward through the Delmarva to New Jersey by the morning of the 16th. Further strengthening to around…
Every event with a place to put it; 15 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
An area of low pressure developed across the southeastern United States on the night of November 14th, and tracked northeastward along the North and South Carolina coastlines during the daytime hours on the 15th, strengthening to around 995mb on the night of the 15th as it continued moving northward through the Delmarva to New Jersey by the morning of the 16th. Further strengthening to around 985 mb occurred on the 16th as the system sped up and moved towards Nova Scotia. Widespread precipitation was brought to the region, including heavy snow and mixed precipitation northwest of the I-95 corridor, and mainly rain in southern Maryland.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Nov 15, 4:17 AM EST, 43 minutes earlier.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 1234 AM EST Thu Nov 15 2018 ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-160545- Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- Tidal Potomac from Cobb Island MD to Smith Point VA- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island-District of Columbia-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 1234 AM EST Thu Nov 15 2018 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and adjacent counties in central Maryland and northern Virginia as well as the District of Columbia. .DAY ONE...Tonight A Winter Weather Advisory for a mixture of snow, sleet, and freezing rain goes into effect late tonight for the Washington DC Metropolitan Area, as well as Spotsylvania and Stafford Counties. .DAYS TWO THROUGH SEVEN...Friday through Wednesday The Winter Weather Advisory expands to all areas except Saint Mary's, Calvert and King George Counties Thursday morning, and remains in effect through midday. A Flood Watch is in effect from noon to midnight Thursday. A Gale Warning is in effect Thursday and Thursday night for the lower tidal Potomac River and middle portion of the Chesapeake Bay, and may need to be extended into Friday. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report precipitation measurements according to standard operating procedures. MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053- 055-501>506-160545- Washington-Frederick MD-Carroll-Northern Baltimore- Extreme Western Allegany-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Northern Fauquier-Southern Fauquier-Western Highland- Eastern Highland-Western Loudoun-Eastern Loudoun- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 1234 AM EST Thu Nov 15 2018 This Hazardous Weather Outlook is for eastern West Virginia, northern and central Virginia, and central and western Maryland with the exception of Garrett County. .DAY ONE...Tonight A Winter Storm Warning goes into effect late tonight for portions of western Maryland, western Virginia and eastern West Virginia. Primary threats are disruption to travel due to snow and ice, and potential power outages due to icing. A Winter Weather Advisory is in effect for central Virginia northward to the western suburbs of Washington DC late tonight for a mix of snow, sleet, and freezing rain. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A Winter Storm Warning is in effect through Thursday night for portions of western Maryland, western Virginia and eastern West Virginia. A Winter Weather Advisory continues for locations east of the Blue Ridge Mountains through Thursday afternoon for snow, sleet and freezing rain. A Flood Watch is in effect from noon to midnight Thursday for eastern Howard and southeastern Montgomery Counties. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report snow and ice measurements according to standard operating procedure. DHOF
The national radar mosaic for the moment the first event began.
9 winter storm, 6 winter weather. Local standard time, as filed.
Widespread snowfall amounts of 7 to 10 inches occurred, with a local maximum of 10.5 inches measured near Frostburg. Some ice accretion of up to a tenth of an inch also occurred.
Widespread snowfall amounts of 7 to 10 inches occurred, with a local maximum of 10 inches measured near Cumberland. Some ice accretion of up to a tenth of an inch also occurred.
Widespread snowfall amounts of 5 to 8 inches occurred, with a local maximum of 7.5 inches measured near Pecktonville. Some ice accretion of up to a tenth of an inch also occurred.
Widespread snowfall amounts of 5 to 8 inches occurred, with a local maximum of 9 inches measured in the higher elevations near Sabillasville. Some ice accretion of up to two tenths of an inch of ice also occurred.
Widespread snowfall amounts of 4 to 5 inches occurred, with a local maximum of 5.2 inches measured near Clarksburg. Some ice accretion of up to a tenth of an inch of ice also occurred.
Widespread snowfall amounts of 2 to 3 inches occurred, with a light glaze of ice accrual also reported.
Widespread snowfall amounts of 1 to 1.5 inches occurred across the county.
Widespread snowfall amounts of 4 to 8 inches occurred, with a local maximum of 7.5 inches measured near Taneytown. Some ice accretion of up to a tenth of an inch of ice also occurred.
Widespread snowfall amounts of 4 to 6 inches occurred, with a local maximum of 5.6 inches measured near Reistertown. Some ice accretion of up to a tenth of an inch of ice also occurred.
Widespread snowfall amounts of 4 to 7 inches occurred, with a local maximum of 7.1 inches measured near Norrisville. Some ice accretion of up to a tenth of an inch of ice also occurred.
Widespread snowfall amounts of 4 to 5 inches occurred. Some ice accretion of up to a tenth of an inch of ice also occurred.
Widespread snowfall amounts of 2 to 4 inches occurred. Some ice accretion of up to a few hundredths of an inch also occurred.
Widespread snowfall amounts of 2 to 4 inches occurred. Some ice accretion of up to a few hundredths of an inch also occurred.
Widespread snowfall amounts of 2 to 3 inches occurred. Some ice accretion of up to a few hundredths of an inch also occurred.
Widespread snowfall amounts of 1 to 2 inches occurred, with highest measured report of 1.7 inches at Baltimore Washington International Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2018Every state in 2018This day in weather historyWarnings in Maryland, November 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 791451, 791452, 791453, 791454, 791457, 791503, 791505, 791458, 791459, 791460, 791461, 791498, 791499, 791500, 791501.